Improving the Chinese Jung super-regulator

Here it sits in a 3 way mono filter, I had no complaints .
I remember measuring ac noise with my fluke 867b in DB,
It went to minus 60 DB its maximum resolution
 

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There's no reason it sounds different just because it is Chinese.
With 1.3B people, they must have their share of smart engineers ;-)
There's a lot of variables, one of the important ones being the PSRR of the circuit being powered and the power amp, speaker, etc.
A potentially negative point is that they don't carry the two grounds all the way to the sense points, which are fixed.
There's a central ground too so I'm pretty sure it measures worse.
Best comparisons/tests are done with headphones as that limits the variables a bit.

To be absolutely sure you have the best solution, get the diyaudiostore boards. You'll support the forum (I don't get anything from it), which is also worth a few bucks.

Jan
 
I totally agree Jan, I future I will consider buying from audio store, especially because, the designs are scrutinised by many skilled diy'ers, and that help is always close by.
My last reason, I will not support chineese marked as I used to, no politics mentioned.
 
Then i desgn a board without the input diodes and caps and output caps as dropin replacement for lm78xx/lm79xx regulators.

This was from 2015 :

150228 Crossfeed 2s.jpg


https://www.diyaudio.com/community/...a-zgf-headphone-amplifier.225577/post-4241321


And a later version with TO220 power devices :

XEN_Didden regs.jpg


https://www.diyaudio.com/community/...a-zgf-headphone-amplifier.225577/post-4685265

Both versions have modifications to allow them to be done in this size (13mm width), as well as being stable with pretty much any electrolytic output caps.
The two outer pins of the DIL header is optional sense pins as in the original design.
And Jan has a pair from the first batch made.

🤓


Patrick
 
Hi. I have some China jung regulator boards with output MOSFETs . I just want to know if led quality makes difference. My friend have lite on brand LEDs and is there anyone compare the noise ? I have Taiwan made bright led brand LEDs. And is it ok to use opa627 on soic to dip adapter instead of ad817 which I can not get right now. And I have 2x22v ac transformers. I will use them for opa627 active crossover with gain and dcb1 on single board ( I think 50ma per rail)
 

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